Thanks for the feedback guys....
We have used digital MG servos on NG steering for years without issue; although we always disable the steering servo when in the retracted position. Our Pro-Drive LGC12S and LGC13S E-Gear controllers automatically disable the steering servo when retracted. With such a wide array of servos being used for steering, I believe I need to put a bit more thought into making a "standard" servo mount with some sizing flexibility.

Here is a bit more info regarding our latest generation in the Pro-Link lineup, the Genesis series:

The new Pro-Link Genesis series offers an extremely robust two piece CNC frame, sealing the motor and gearbox from the mechanics while eliminating all possibility of friction or binding due to uneven mounting rails. Over-sized T-Bar, beefed up trunion, and a dual bearing supported drive screw assures these retracts remain slop free even after those not-so-perfect landings. Connector plug is integrated into the retract housing, allowing for simple gear installation and removal. One of the most important upgrades to the Genesis Series is position sensing end stops, while retaining current sensing in transit. Travel endpoints are sensor controlled, eliminating all the stresses on the mechanics and drive system typically seen with stall current actuator systems. As an additional safety, we retained the stall current mode while gear are in transit. Gearing specifically selected to provide substantially more torque than our competitors while retaining our quick transit speed.
The Genesis series will be offered as pin mount and clamp lock style trunions in common sizing as well as normal and reversed configurations.
In addition, we have a new sequencing E-Gear controller in development offering a long list of exceptional new features, here are a few highlights: Integrated full color display, independent gear and door programming, steering gyro, numerous braking modes including differential braking! That's all i'll mention for now, More news on this ground breaking controller soon...!